Question

I have a package com.supercorp.killerapp and within it is a package(com.supercorp.killerapp.views) if I’m not creating the app with the guiformbuilder:

• How do I set the icon of a button on a JInternalFrame that is in the views directory?
• In general, how do I access images in a different folder?
• Should all my images be contained in a seperate folder?

The syntax I’m using is:

JButton iconButton = new JButton(new ImageIcon("page_delete.png"));

The button isn’t displaying the image.

Answer 1

I put in the jar that contains my application, in a package called com.example.GreatApp.resources and then load it using:

getClassLoader().getResourceAsStream(
               "com/example/GreatApp/resource/icon.png");`

Update. Full example

/**
 * Creates and returns an ImageIcon from the resource in jar.
 * @param location resource location in the jar,
 * like 'com/example/GreatApp/res/icon.png' or null if it was not found.
 */
public ImageIcon createImageIconFromResource(String location)
           throws java.io.IOException {
  java.io.InputStream input = getClassLoader().getResourceAsStream(
               location);
  // or throw an ioexception here aka `file not found`
  if(input == null) return null;
  return new ImageIcon(ImageIO.read(input));
}